charm-interface-keystone-fi.../provides.py
2019-03-27 22:02:39 +00:00

102 lines
3.5 KiB
Python

# Copyright 2019 Canonical Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from charms.reactive import (
all_flags_set,
clear_flag,
Endpoint,
set_flag,
when,
when_not,
)
import uuid
class KeystoneFIDServiceProvides(Endpoint):
@property
def hostname(self):
return self.all_joined_units.received['hostname']
@property
def port(self):
return self.all_joined_units.received['port']
@property
def tls_enabled(self):
return self.all_joined_units.received['tls-enabled']
@property
def base_url(self):
scheme = 'https' if self.tls_enabled else 'http'
return ('{}://{}:{}'.format(scheme, self.hostname,
self.port))
@when('endpoint.{endpoint_name}.joined')
def joined(self):
set_flag(self.expand_name('{endpoint_name}.connected'))
@when('endpoint.{endpoint_name}.changed')
def changed(self):
flags = (
self.expand_name(
'endpoint.{endpoint_name}.changed.hostname'),
self.expand_name(
'endpoint.{endpoint_name}.changed.port'),
self.expand_name(
'endpoint.{endpoint_name}.changed.tls-enabled'),
)
if all_flags_set(*flags):
for flag in flags:
clear_flag(flag)
set_flag(self.expand_name('{endpoint_name}.available'))
@when_not('endpoint.{endpoint_name}.joined')
def departed(self):
flags = (
self.expand_name('{endpoint_name}.connected'),
self.expand_name('{endpoint_name}.available'),
)
for flag in flags:
clear_flag(flag)
def publish(self, protocol_name, remote_id_attribute):
# get the first relation object as we only have one relation
# to a primary as a subordinate
rel = self.relations[0]
# can have multiple dashboard charms in general, therefore,
# all relation objects and all units must be handled
# to_publish/relation_set work on a per-relation basis
rel.to_publish['protocol-name'] = protocol_name
rel.to_publish['remote-id-attribute'] = remote_id_attribute
def request_restart(self, service_type=None):
"""Request a restart of a set of remote services
:param service_type: string Service types to be restarted eg 'neutron'.
If ommitted a request to restart all
services is sent
"""
if service_type:
key = 'restart-nonce-{}'.format(service_type)
else:
key = 'restart-nonce'
# get the first relation object as we only have one relation
# to a primary as a subordinate
rel = self.relations[0]
# can have multiple dashboard charms in general, therefore,
# all relation objects and all units must be handled
# to_publish/relation_set work on a per-relation basis
rel.to_publish[key] = str(uuid.uuid4())